efficiencynoun [ U ]
uk/ɪˈfɪʃ.ən.si/us/ɪˈfɪʃ.ən.si/B2 the good use of time and energy in a way that does not waste any:
What is so impressive about their society is the efficiency of the public services.
energy efficiency
specialized physics the difference between the amount of energy that is put into a machine in the form of fuel, effort, etc. and the amount that comes out of it in the form of movement
More examples
- She got through her work with speed and efficiency.
- Streamlining cars increases their fuel efficiency.
- Ships from eight navies will be taking part in an exercise in the Pacific to improve their efficiency in combat.
- He's a stickler for efficiency.
- Sweden has shown the way forward on energy efficiency.
Thesaurus: synonyms and related words
Efficient and effective
- a treat idiom
- be firing on all cylinders idiom
- businesslike
- do the trick idiom
- does what it says on the tin idiom
- labour-saving
- miraculous
- organized
- potency
- proactive
- punch
- smooth
- technical
- timesaving
- together
- treat
- trick
- well oiled
- well tried
- worth
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